From mboxrd@z Thu Jan 1 00:00:00 1970 From: linux@roeck-us.net (Guenter Roeck) Date: Sun, 14 May 2017 07:39:33 -0700 Subject: [PATCH v3 6/6] watchdog: ts4600: add driver for TS-4600 watchdog In-Reply-To: <20170511072231.GD5833@dragon> References: <20170505193259.16517-1-sebastien.bourdelin@savoirfairelinux.com> <20170505193259.16517-7-sebastien.bourdelin@savoirfairelinux.com> <20170511072231.GD5833@dragon> Message-ID: To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On 05/11/2017 12:22 AM, Shawn Guo wrote: > On Fri, May 05, 2017 at 03:32:59PM -0400, Sebastien Bourdelin wrote: >> This watchdog is instantiated in a FPGA and can only be access using a >> GPIOs bit-banged bus, called the NBUS by Technologic Systems. >> The watchdog is made of only one register, called the feed register. >> Writing to this register will re-arm the watchdog for a given time (and >> enable it if it was disable). It can be disabled by writing a special >> value into it. >> >> Signed-off-by: Sebastien Bourdelin >> --- >> Changes v2 -> v3: >> - rebase on master >> - remove the timeout table to simplify the logic (suggested by >> Guenter Roeck) >> - fix the set_timeout function (suggested by Guenter Roeck) >> - hardcode the max_hw_heartbeat_ms value based on the ts4600 max >> timeout value supported (suggested by Guenter Roeck) >> - remove the max_timeout usage and set a default timeout value >> (suggested by Guenter Roeck) >> - use the devm_watchdog_register_device function instead of >> watchdog_register_device (suggested by Guenter Roeck) >> >> Changes v1 -> v2: >> - rebase on master >> - retrieve the ts_nbus instantiated by the parent node (suggested by >> Linus Walleij) >> - rename the wdt by watchdog in the device tree and in the >> documentation (suggested by Rob Herring) >> - add a dependency to the TS_NBUS driver in the Kconfig (suggested by >> Guenter Roeck) >> - simplify the set_timeout function (suggested by Guenter Roeck) >> - use the max_hw_heartbeat_ms callback instead of the max_timeout >> callback (suggested by Guenter Roeck) >> --- >> .../devicetree/bindings/watchdog/ts4600-wdt.txt | 16 ++ >> arch/arm/boot/dts/imx28-ts4600-common.dtsi | 5 + > > The dts change shouldn't be mixed within driver patch. > Maybe, but Rob Acked the devicetree changes, so I don't see a reason for splitting it up now. Guenter > Shawn > >> drivers/watchdog/Kconfig | 11 ++ >> drivers/watchdog/Makefile | 1 + >> drivers/watchdog/ts4600_wdt.c | 185 +++++++++++++++++++++ >> 5 files changed, 218 insertions(+) >> create mode 100644 Documentation/devicetree/bindings/watchdog/ts4600-wdt.txt >> create mode 100644 drivers/watchdog/ts4600_wdt.c > -- > To unsubscribe from this list: send the line "unsubscribe linux-watchdog" in > the body of a message to majordomo at vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html >